September 9, 2019 0

Lecture 20 – Playing Background Music, Movies, Sprites, and Handwriting

Playing Background Music, Movies, Sprites,
and Handwriting Academic Presenter is not only for creating
scientific contents, but also it is for creating artistic presentations. Although it is not
common to have background music for a scientific presentation, for marketing it is very useful
to add music in the background. To play a piece of music in the background, first we
need to add music. From Insert menu, choose Audio and add the preferable music. The music
will be embedded to project. Next, select the first keyframe from the Presentation tab.
From the Media combo box, select the corresponding music. You can play the music to make sure
that selected ID belongs to the added music. By adding the music to the first keyframe,
Academic Presenter will keep playing it until the end of the presentation. Also, please
don’t forget to update the keyframe after any change. The volume of the background music
can be modified from background tab. Users can add audio to any keyframe, but unlike
background music, it will be stopped when the presentation goes to the next keyframe.
Academic Presenter can also play video in two different modes: full-screen mode and
embedded mode. To play a video in full-screen mode, choose Video from Insert menu. Then,
select the video from your disk. Finally, drag with the mouse on the screen to place
the video object somewhere. This icon is only visible in design mode. Now, to play this
video in a specific keyframe, add the corresponding ID to media combo box of selected keyframe.
Finally, update the keyframe. Now, let us take a look at the results.
To embed videos inside the canvas, one can add sprites. We covered this topic in previous
chapters. After adding sprite, you can play them at a certain keyframe. By choosing sprite
ID inside media combo box, Academic Presenter will play that sprite with the prespecified
setting at the keyframe. In addition to audio and video files, users
can animate handwritten text or shape at a specific keyframe. Adding handwriting is covered
in lecture 13. To animate a writing at a certain keyframe, again you need to change the media
to the ID of the handwriting object. Although playing a writing is easy, yet there are some
details to keep the consistency. Generally, we want to have no writing at the beginning,
and then start drawing on canvas and finally results stay at the end. To create this effect,
we need three keyframes. A keyframe with an opacity of zero for the HW object. Then another
keyframe with transition speed of 1 frame to animate. Finally, we will change the opacity
to 100% in the last keyframe.

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